\begin{table}
\centering
\begin{tabular}[t]{lccc}
\toprule
  & Model 1 & Model 2 & Model 3\\
\midrule
Graduate & \num{0.046}*** & \num{0.046}*** & \num{0.032}***\\
 & {}[\num{0.042}, \num{0.050}] & {}[\num{0.042}, \num{0.050}] & {}[\num{0.025}, \num{0.038}]\\
Sex & \num{0.004}** & \num{0.003}** & \num{0.004}**\\
 & {}[\num{0.001}, \num{0.006}] & {}[\num{0.001}, \num{0.006}] & {}[\num{0.001}, \num{0.006}]\\
Age & \num{0.000} & \num{0.000} & \num{0.000}\\
 & {}[\num{-0.001}, \num{0.000}] & {}[\num{-0.001}, \num{0.000}] & {}[\num{-0.001}, \num{0.000}]\\
Income (ten cat.) & \num{0.002}*** & \num{0.002}*** & \num{0.002}***\\
 & {}[\num{0.001}, \num{0.003}] & {}[\num{0.001}, \num{0.002}] & {}[\num{0.001}, \num{0.002}]\\
Children & \num{-0.010}*** & \num{-0.010}*** & \num{-0.010}***\\
 & {}[\num{-0.014}, \num{-0.007}] & {}[\num{-0.014}, \num{-0.006}] & {}[\num{-0.013}, \num{-0.006}]\\
Unemployed & \num{-0.012}*** & \num{-0.012}*** & \num{-0.012}***\\
 & {}[\num{-0.015}, \num{-0.008}] & {}[\num{-0.016}, \num{-0.009}] & {}[\num{-0.016}, \num{-0.008}]\\
Academic\_Freedom at C &  & \num{0.027}*** & \num{0.022}***\\
 &  & {}[\num{0.018}, \num{0.036}] & {}[\num{0.013}, \num{0.031}]\\
Electoral Democracy Score &  & \num{-0.126}*** & \num{-0.125}***\\
 &  & {}[\num{-0.199}, \num{-0.052}] & {}[\num{-0.198}, \num{-0.052}]\\
GDP pc(log) &  & \num{-0.070}** & \num{-0.068}*\\
 &  & {}[\num{-0.122}, \num{-0.018}] & {}[\num{-0.120}, \num{-0.016}]\\
Population (log) &  & \num{-0.082} & \num{-0.080}\\
 &  & {}[\num{-0.267}, \num{0.102}] & {}[\num{-0.264}, \num{0.105}]\\
Academic Freedom at C * Graduate &  &  & \num{0.028}***\\
 &  &  & {}[\num{0.018}, \num{0.038}]\\
\midrule
Num.Obs. & \num{235849} & \num{234788} & \num{234788}\\
R2 & \num{0.171} & \num{0.172} & \num{0.172}\\
R2 Adj. & \num{0.171} & \num{0.172} & \num{0.172}\\
Std.Errors & by: country\_cohort & by: country\_cohort & by: country\_cohort\\
\bottomrule
\end{tabular}
\end{table}
